1211301130 has 64 divisors (see below), whose sum is σ = 2483260416. Its totient is φ = 422208000.

The previous prime is 1211301121. The next prime is 1211301131. The reversal of 1211301130 is 311031121.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1211301130.

It is not an unprimeable number, because it can be changed into a prime (1211301131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161565 + ... + 168895.

It is an arithmetic number, because the mean of its divisors is an integer number (38800944).

Almost surely, 2^1211301130 is an apocalyptic number.

1211301130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211301130 is an abundant number, since it is smaller than the sum of its proper divisors (1271959286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211301130 is a wasteful number, since it uses less digits than its factorization.

1211301130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7423.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1211301130 is about 34803.7516655892. The cubic root of 1211301130 is about 1065.9840522943.

Adding to 1211301130 its reverse (311031121), we get a palindrome (1522332251).

The spelling of 1211301130 in words is "one billion, two hundred eleven million, three hundred one thousand, one hundred thirty".